HOMCOM C20-010 Benutzerhandbuch Seite 10

IV. Inspection of the basic ignition timing
Note: For some systems, before checking or adjusting the ignition time according to
instructions, some special elements should be unplugged, jump connected or grounded. If
it's not done according to instructions, the checked or adjusted ignition time will not be
correct.
4-1. Make sure that the timing light is correctly connected according to the above require-
ment.
4-2. Make sure the preparations of the engine have been made according to the above
requirement.
4-3. Start the engine, run to the normal working temperature.
4-4. If needed, adjust the idle speed according to the factory's requirement.
4-5. Make sure that the ignition advance angle indicated on the timing light is zero. If not,
press the increase/decrease button of the advance angle, to make the display of the
advance angle "zero" . (This applies to QZ-6803B timing light; Model A doesn't need this
step.)
4-6. Observe the relative position between the timing scale and the indicator (see Fig 4):
compare the displayed timing degrees with the specified value, if the timing degrees are
within the allowed range(usually ± 2 degrees), then, the ignition timing is normal. If the
degrees exceed the range, it's likely that some parts need to be replaced or the timing
needs to be adjusted.
4-7. Loose the flash switch, turn off the flash light.
4-8. Turn off the ignition switch, take down the timing light.
Note: If the timing light doesn't work or works abnormally, please refer to the trouble-elimi-
nation section of this manual, check the possible causes.
V. Adjustment of the ignition timing
Adjust the ignition timing according to the adjustment procedure and technical requirement
according to the repair manual. Never try to adjust the ignition timing when one is not sure
of the adjustment procedure and technical requirement.
Reference
Read of the timing record
indicator
-10-
Rotate the
timing mark